Xiao Rui is the emperor's son, he is greedy, sexist and a womanizer. Emperor Liu Kang announced: after his death, the throne will pass to his daughter Yao Lin. Liu Kang really wants to find a good husband for her daughter, but she doesn't like any of the princes. He called Lao Fei, the great hero who saved the world from the monster, and gave him a task: He must become Yao Lin's bodyguard and make Yao Lin love him. Lao Fei likes the princeps and gladly accepted task: flirt with the princess.